在rescue模式下修复MBR制造故障:使用如下命令破坏系统的MBR引导代码,使其无法启动:rootlocalhostroot#ddif=/dev/zeroof=/dev/hdabs=446count=1.RedHatLinux舅亡dHatLinuxrelease9(Shrike)erne12!.4.ZQ-8onani6B6rh9login:rootPassword:Loginincorrectlogn:rootPassword:Lastloginroot(?rh9:TuerootJ#pdeds18113:Z5:5Zonttylif=/deu/zerc!of=/deu/hdabs=446CDunt=lrootlocalhostroot#reboot,第RedHatLinuxRedHatLinuxrelease9(Shrike)Kerne1Z.4.20-8onan1686rh9login:rootPassword:Loginincorrectlogin:rootPassword:L